CN212630933U

CN212630933U - Dental implant with HA-nps-containing bioactive surface

Info

Publication number: CN212630933U
Application number: CN202020469202.1U
Authority: CN
Inventors: 曹君; 伍靖
Original assignee: Shenzhen Longhua Peoples Hospital
Current assignee: Shenzhen Longhua Peoples Hospital
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-03-02
Anticipated expiration: 2030-04-02

Abstract

A dental implant with a bioactive surface containing HA-nps comprises a body part, a base station and a connecting screw rod, wherein the outer surface of the body part is provided with an external thread, the interior of the body part is provided with a first internal thread hole extending along the axial direction, and the surface of the body part is attached with a bioactive coating made of HA-nps; one end of the base platform is inserted into the body part, one end of the base platform extends out of the body part, a second internal thread hole extending along the axial direction is arranged in the base platform, and the second internal thread hole corresponds to and is communicated with the first internal thread hole; the connecting screw may be screwed into the first and second internally threaded holes to fixedly connect the abutment and the body together. The utility model discloses a contain the bioactive surface's of HA-nps dental implant's somatic part is gone up to be attached with bioactive coating, and its biocompatibility is good, can promote bone healing and strengthen the steadiness of planting. The utility model has the characteristics of novel structure, simple to operate, plant firmly, it has very strong practicality and adaptability, should widely popularize.

Description

Dental implant with HA-nps-containing bioactive surface

[ technical field ] A method for producing a semiconductor device

The utility model relates to a dental implant, in particular to a dental implant with HA-nps bioactive surface.

[ background of the invention ]

The dental implant is a device which is implanted into the upper and lower jawbone of the edentulous part of the human body by means of surgical operation, and the prosthetic tooth 40 is installed on the upper part of the dental implant after the operation wound is healed. The key point of the implant is the implant part which is equivalent to the body part 10 of a real tooth and plays an important role in fixing the whole tooth; the biocompatibility of the implant part determines whether it can be healed with living bone, and various forces from occlusion can be supported together only if the bone and the implant grow together.

Furthermore, existing dental implants, which are typically of a fixed size and are made of a hard material without a coefficient of expansion, are difficult to fit and result in an insufficiently stable implant when the patient's socket is breached due to insufficient bone mass (e.g., in osteoporosis).

Thus, the existing dental implants still need to be improved.

[ Utility model ] content

The utility model aims to solve the problems and provides a dental implant with HA-nps bioactive surface.

In order to solve the problems, the utility model provides a dental implant with HA-nps bioactive surface, which is characterized in that the dental implant comprises a body part, a base station and a connecting screw rod, wherein the outer surface of the body part is provided with an external thread, the interior of the body part is provided with a first internal thread hole extending along the axial direction, and the surface of the body part is attached with a bioactive coating made of HA-nps; one end of the base platform is inserted into the body part, one end of the base platform extends out of the body part, a second internal thread hole extending along the axial direction is arranged in the base platform, and the second internal thread hole corresponds to and is communicated with the first internal thread hole; the connecting screw may be screwed into the first and second internally threaded holes to fixedly connect the abutment and the body together.

Further, the body portion includes a dense portion and an inner lining portion that are sleeve-bonded, the dense portion being made of a ceramic material, the inner lining portion being made of a resin material, the dense portion being formed outside the inner lining portion; the bioactive coating is disposed on the dense portion.

Further, inside lining portion is equipped with the circular cone hole, cylindrical hole and the first internal thread hole of coaxial setting in proper order, the open end internal diameter in circular cone hole is greater than the internal diameter in cylindrical hole, the internal diameter in first internal thread hole is less than the internal diameter in cylindrical hole and form spacing step at its junction.

Further, an opening is provided in the bottom of the dense portion, the opening divides the bottom of the dense portion into two parts, and the opening is communicated with the first internal thread hole.

Furthermore, a plurality of positioning grooves are arranged on the circumferential inner wall of the cylindrical hole at intervals, and the positioning grooves extend along the axial direction of the cylindrical hole.

Further, the abutment comprises a connecting part, a crown part, a conical part and a columnar part which are integrally formed, wherein the outer diameter of the crown part is larger than the inner diameter of the opening end of the conical hole; the shape and the size of the conical part are matched with those of the conical hole; the columnar part is matched with the cylindrical hole in shape and size; the second female screw hole extends from an end surface of the connecting portion in an axial direction thereof to penetrate to an end surface of the columnar portion.

Furthermore, a plurality of positioning convex parts are arranged on the circumferential outer wall of the columnar part at intervals, the positioning convex parts and the columnar part are integrally formed, and the shape and the size of each positioning convex part are matched with those of the corresponding positioning groove.

Further, when the abutment is inserted into the body, the crown portion abuts against the end face of the body, the cone portion is matched with the cone-shaped hole, the column portion is matched with the cylindrical hole, the positioning convex portion is matched with the positioning groove, the end face of the column portion abuts against the limiting step, and the second internal thread hole is communicated with and coaxial with the first internal thread hole.

The beneficial contributions of the utility model reside in that, it has effectively solved above-mentioned problem. The utility model discloses a contain the bioactive surface's of HA-nps dental implant's somatic part is gone up to be attached with bioactive coating, and its biocompatibility is good, can promote bone healing and strengthen the steadiness of planting. Furthermore, the utility model discloses a dental implant's of HA-nps-containing bioactive surface compact portion bottom is equipped with the opening, and it makes the bottom of compact portion separated into two parts and HAs the expansibility to can be crowded into the opening with connecting screw and make the slight outside inflation in bottom of compact portion under the special circumstances, thereby the tight junction that expands avoids the planting body not hard up. In addition, a positioning groove and a positioning convex part are arranged between the base station and the body part, so that the base station can be prevented from rotating in the circumferential direction, and the connecting screw rod is convenient to install. The utility model discloses a dental implant that contains HA-nps's biological activity surface HAs novel structure, biocompatibility is good, simple to operate, plants firm characteristics, and it HAs very strong practicality and adaptability, should widely popularize.

[ description of the drawings ]

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a structural sectional view of the body 10.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a structural sectional view of the base 20.

Fig. 5 is a bottom view of fig. 4.

Fig. 6 is a schematic view of the connecting screw 30.

The body 10, the compact part 11, the external thread 111, the opening 112, the lining part 12, the conical hole 121, the cylindrical hole 122, the positioning groove 1221, the first internal thread hole 123, the limit step 124, the bioactive coating 13, the abutment 20, the connecting part 21, the crown part 22, the conical part 23, the columnar part 24, the positioning convex part 241, the second internal thread hole 25, the connecting screw 30, the nut head 31, the screw part 32 and the denture 40.

[ detailed description ] embodiments

The following examples are further to explain and supplement the present invention, and do not constitute any limitation to the present invention.

As shown in FIGS. 1 to 6, the dental implant with HA-nps bioactive surface of the present invention comprises a body 10, an abutment 20 and a connecting screw 30. Wherein the body 10 and the base 20 can be connected together by a connection screw 30.

As shown in fig. 1 to 3, the body portion 10 includes a dense portion 11 and an inner lining portion 12 which are sleeved and combined, wherein the dense portion 11 is formed outside the inner lining portion 12.

As shown in fig. 1 to 3, the dense portion 11 is made of a ceramic material and has a long rod shape. The outer surface of the compact portion 11 is provided with an external thread 111 for screwing to a jaw bone. And an installation groove matched with the lining part 12 in shape is arranged in the dense part 11. The mounting grooves are provided in the axial direction of the body 10. An opening 112 is provided at the bottom of the dense portion 11, and the opening 112 divides the bottom of the dense portion 11 into two parts. The opening 112 is through the mounting groove and is wedge-shaped. The bottom of the dense portion 11 has a certain expansion capacity because the bottom of the dense portion 11 is provided with the opening 112. When the body 10 is not firmly connected enough due to osteoporosis at the tooth implantation position, the end of the connecting screw 30 can be screwed into the opening 112, so that the bottom of the compact part 11 slightly expands outwards to realize expansion, and the body 10 is prevented from loosening.

Furthermore, in order to promote the formation of new bone around the implant and to accelerate the formation of osseointegration, a bioactive coating 13 made of HA-nps (hydroxyapatite nanoparticles) is attached to the surface of the pars compacta 11 (see figures 1 to 3). The bioactive coating 13 can be degraded in a body fluid environment, the concentration of Ca2+ in a local microenvironment is improved, and the composite body can be swallowed intracellularly, so that the early osseointegration is accelerated, the stability of implant implantation is enhanced, and the looseness is avoided. The bioactive coating 13 may be prepared by a known process, and may be formed on the surface of the dense portion 11 in a known manner. The firmness of planting can be enhanced by attaching a bioactive coating to the surface of the dense part 11.

As shown in fig. 1 to 3, the lining portion 12 is made of a resin material, has an outer shape matching the shape of the mounting groove, is embedded in the dense portion 11, and is integrated with the dense portion 11. By providing the liner portion 12 inside the dense portion 11 to connect the base 20, the life of the dense portion 11 can be extended.

As shown in fig. 1 to 3, the liner portion 12 is provided with a conical hole 121, a cylindrical hole 122, and a first female screw hole 123 in this order. The conical bore 121, the cylindrical bore 122 and the first internally threaded bore 123 are arranged coaxially, with their axes coinciding with the axis of the body 10. The opening 112 end inner diameter of the conical hole 121 is larger than the inner diameter of the cylindrical hole 122. The inner diameter of the lower end of the cylindrical hole 122 is identical to the inner diameter of the cylindrical hole 122. The inner diameter of the cylindrical hole 122 is larger than the inner diameter of the first internally threaded hole 123, so that the connection between the cylindrical hole 122 and the first internally threaded hole 123 forms a limit step 124 for abutting against the abutment 20.

As shown in fig. 1 to 3, the first female screw hole 123 is a through hole that penetrates the opening 112 of the dense portion 11, so that the end of the connecting screw 30 can be screwed into the opening 112 through the first female screw hole 123 to expand the bottom end of the dense portion 11.

As shown in fig. 1 to 3, the size of the opening end of the opening 112 should be not smaller than the inner diameter of the first internally threaded hole 123 so that the end of the connecting screw 30 is pushed into the opening 112.

As shown in fig. 1 to 3, a plurality of positioning grooves 1221 are provided at intervals on the circumferential inner wall of the cylindrical hole 122 to position and mount the base 20. The positioning grooves 1221 are elongated grooves that are recessed and formed on the inner wall of the cylindrical hole 122 and extend in the axial direction of the cylindrical hole 122. In this embodiment, the inner wall of the cylindrical hole 122 is uniformly distributed with 6 positioning grooves 1221.

As shown in fig. 1, 4 and 5, the abutment 20 is adapted to be inserted into the body 10, and has one end inserted into the lining portion 12 of the body 10 and the other end extending out of the body 10 for connecting the dental prosthesis 40.

As shown in fig. 1, 4 and 5, the base 20 includes a connecting portion 21, a crown portion 22, a cone portion 23 and a column portion 24 which are integrally formed. The connecting portion 21 is used for connecting the dental prosthesis 40. The crown portion 22 is adapted to abut against the end surface of the body portion 10, and is capable of being limited and positioned, and on the one hand, is capable of closing the open end of the body portion 10, so as to prevent the substance from entering the lining portion 12 and growing bacteria. The crown portion 22 has an outer diameter larger than the inner diameter of the opening 112 end of the conical bore 121, and in this embodiment, the outer diameter is equal to the outer diameter of the end face of the body portion 10. The shape and size of the conical portion 23 match those of the conical hole 121 of the liner portion 12. The shape and size of the columnar portion 24 match those of the cylindrical hole 122 of the liner portion 12.

As shown in fig. 1, 4, and 5, the base 20 is provided with a second female screw hole 25 extending in the axial direction. The second female screw hole 25 extends from an end surface of the connecting portion 21 in the axial direction thereof and penetrates to an end surface of the columnar portion 24. The second female screw hole 25 is provided coaxially with the connecting portion 21, the conical portion 23, and the columnar portion 24. The inner diameter of the second internally threaded hole 25 is equal to the inner diameter of the first internally threaded hole 123.

As shown in fig. 1, 4 and 5, a plurality of positioning protrusions 241 are provided at intervals on the circumferential outer wall of the columnar portion 24 for positioning and connecting with the lining portion 12. The positioning protrusion 241 protrudes from the surface of the columnar portion 24, and is integrally formed with the columnar portion 24. The shape and size of the positioning protrusion 241 are matched with those of the positioning groove 1221, and the positioning protrusion and the positioning groove 1221 can be embedded with each other. In this embodiment, 6 positioning protrusions 241 are uniformly distributed on the outer wall of the columnar portion 24.

As shown in fig. 1 and 6, the connection screw 30 is used for fastening connection and includes a nut head 31 and a screw portion 32. The size of the nut head 31 is larger than that of the screw part 32. The screw portion 32 is provided with an external thread, which can be in threaded connection with the first internal threaded hole 123 and the second internal threaded hole 25.

When implanting the tooth, the body 10 is screwed to the jaw at a predetermined position by its external screw 111; thereafter, the abutment 20 is inserted into the lining portion 12 of the body portion 10, the crown portion 22 abuts against the end face of the body portion 10, the conical portion 23 engages with the conical hole 121, the columnar portion 24 engages with the cylindrical hole 122, the positioning protrusion 241 engages with the positioning groove 1221, the end face of the columnar portion 24 abuts against the stopper step 124, and the second internal threaded hole 25 is coaxially penetrated with the first internal threaded hole 123. Thereafter, the connecting screw 30 is screwed into the second female screw hole 25 of the base 20, and the lower end of the connecting screw 30 is screwed into the first female screw hole 123. If the jaw bone is osteoporotic, the connecting screw 30 is further rotated to push the lower end of the connecting screw 30 into the opening 112 of the dense portion 11, so that the bottom end of the dense portion 11 is slightly expanded outward to be tightened, thereby enhancing the firmness.

Because the positioning groove 1221 and the positioning convex part 241 are arranged between the lining part 12 and the base 20, the base 20 can be prevented from rotating in the circumferential direction during installation, and the connecting screw 30 can be screwed conveniently; the bottom of the compact part 11 is provided with an opening 112 which has expansion capacity and can adapt to different installation conditions; the surface of the compact part 11 is provided with the bioactive coating 13, so that the stability of the dental implant can be enhanced. The utility model discloses a dental implant that contains HA-nps's biological activity surface HAs novel structure, simple to operate, plants firm characteristics, and it HAs very strong practicality and adaptability, should widely popularize.

While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the concept of the invention.

Claims

1. A dental implant comprising a bioactive surface of HA-nps, comprising:

a body (10) having an external thread (111) on the outer surface thereof, a first internally threaded bore (123) extending axially therein, and a bioactive coating (13) made of HA-nps attached to the surface of the body (10);

a base (20), one end of which is inserted into the body (10) and the other end of which extends out of the body (10), wherein a second internal threaded hole (25) which extends along the axial direction is arranged inside the base (20), and the second internal threaded hole (25) is corresponding to and communicated with the first internal threaded hole (123);

and a connection screw (30) which can be screwed into the first female screw hole (123) and the second female screw hole (25) to fixedly connect the base (20) and the body (10).

2. The dental implant with a bioactive surface comprising HA-nps according to claim 1, characterized in that said body (10) comprises a compact portion (11) and an inner lining portion (12) which are telescopically coupled, said compact portion (11) being made of a ceramic material and said inner lining portion (12) being made of a resin material, said compact portion (11) being formed outside said inner lining portion (12); the bioactive coating (13) is disposed on the dense portion (11).

3. The dental implant with a bioactive surface having HA-nps according to claim 2, wherein the inner liner portion (12) is provided with a conical hole (121), a cylindrical hole (122) and a first internal threaded hole (123) coaxially arranged in sequence, the opening (112) end of the conical hole (121) HAs an inner diameter larger than that of the cylindrical hole (122), and the first internal threaded hole (123) HAs an inner diameter smaller than that of the cylindrical hole (122) to form a limit step (124) at the junction thereof.

4. The dental implant with a bioactive surface comprising HA-nps according to claim 3, characterized in that an opening (112) is provided at the bottom of said compact portion (11), said opening (112) dividing the bottom of said compact portion (11) in two parts, said opening (112) communicating with said first internally threaded hole (123).

5. The dental implant with HA-nps-containing bioactive surface according to claim 4, wherein a plurality of positioning grooves (1221) are provided at intervals on the circumferential inner wall of the cylindrical hole (122), the positioning grooves (1221) extending along the axial direction of the cylindrical hole (122).

6. The dental implant with HA-nps-containing bioactive surface according to claim 5, wherein the abutment (20) comprises a connecting part (21), a crown part (22), a cone part (23) and a column part (24) which are integrally formed, the outer diameter of the crown part (22) is larger than the inner diameter of the opening (112) end of the cone-shaped hole (121); the shape and the size of the conical part (23) are matched with those of the conical hole (121); the columnar part (24) is matched with the cylindrical hole (122) in shape and size; the second female screw hole (25) extends from the end surface of the connecting portion (21) in the axial direction thereof and penetrates to the end surface of the columnar portion (24).

7. The dental implant with HA-nps-containing bioactive surface according to claim 6, wherein a plurality of positioning protrusions (241) are arranged on the circumferential outer wall of the columnar portion (24) at intervals, the positioning protrusions (241) are integrally formed with the columnar portion (24), and the shape and size of the positioning protrusions (241) are matched with the positioning grooves (1221).

8. The dental implant of claim 7, characterized in that when the abutment (20) is inserted in the body (10), the crown portion (22) abuts against the end surface of the body (10), the cone portion (23) is fitted in the cone-shaped hole (121), the column portion (24) is fitted in the cylindrical hole (122), the positioning protrusion (241) is fitted in the positioning groove (1221), the end surface of the column portion (24) abuts against the limit step (124), and the second internally threaded hole (25) is coaxial with and through the first internally threaded hole (123).